My 4 year old loves to play imaginative pretend play games, but lately his play has been taken over by franchises I feel aren't right for his age, especially Ninjago, Nexo Knights, Star Wars, Ninja Turtles and superheroes. He does not watch any of these shows, but he picks up the ideas at his preschool. He just started there this September. (We don't live in the UK.) Until then he was at home with me and his younger brother. He does get a little exposure to some of these things also at home - we have a few Ninjago pieces in his lego collection, and a few spiderman t-shirts, that kind of thing. Because he enjoys it I sometimes play 'ninjas' with him by just making it a kind of exercise game where we do jumping and climbing and so on. I can see these sorts of games are fun and appealing, but I am sad at how fast he's moving into games that I don't think are right for a 4 yo, and then his 2 yo brother joins in of course. Now he says all he wants to play is Star Wars or Nexo Knights, because this is what the kids play at preschool. But it's impossible to play these games in a non-violent way! Is this a common experience? Does anyone have any ideas about how to deal with this pressure to mature so fast? Or perhaps I am worrying about nothing?!